Spraying device



Feb. l2, 1946.

M. s." DUNKELBERGER 1 2,394,593

. SPRAYING DEVICE' Filed uw. 22. 19112 Patented Feb. 12, 1946 SPRAYING DEVICE n Milton S. Dunkelberger, Dayton, Ohio, assigner to The American Display Company, Dayton, Ohio, a corporation of Ohio Application December 22, 1942, Serial No. 469,848

4 Claims.

This invention relates to a fluid pump mechanism and more particularly to a squirt gun.

Spray guns have been used quite extensively over along period of time. In many of the spray guns that have been used, a system of check valves is. utilized to control the iiow of the fluid. Usually one check valve is located in the intake opening and another check valve is used in the outlet. One of these valves closes in response to the creation of a vacuum in the 4pump cylinder and the other operates in response to a pressure therein.

An object of this invention is to provide a duofunctional valve, so that the same valve member may be utilized for controlling both the intake and the outlet, the valve being so arranged that it permits lling of the pump rapidly through a large oriiice or fluid passage and discharge of the fluid through a restricted opening simulating a nozzle, to thereby effectively discharge the fluid through this restricted opening under high pres sure.

Another object of this` invention is to provide a nozzle adapted for use either on a spray gun or a hose or any other place where a nozzle having a restricted opening is required, which nozzle permits the fluid to escape in a jet that may or may not be spread by an adjustable spreading mechanism, which mechanism may be adapted to project laterally into the stream or jet so as to disperse this jet as desired.`

Other objects and advantages reside in the construction of parts, the combination thereof and the mode of operation, as will become more apparent from the following description.

In the drawing:

Figure 1 is a side elevational View of the spray gun mounted in association with the tank for holding a fire extinguishing fluid, spraying solution or any other huid adaptable for use in the pump.

Figure 2 is a longitudinal, cross sectional view of the gun.

Figure 3 is a cross sectional view taken substantially on the line 3-3 of Figure 2.

Figure 4 is a cross sectional View of the valve member taken on the line 4 4 of Figure 2.

Figure 5 is a perspective view of a bracket adapted to support thespray gun.

Figure 6 is a side elevational view of the nozzle u'sed with a conventional hose.

Referring to the drawing, the reference character I0 indicates a long tubular. cylindrical member forming the cylindrical wall of the pump. At the upper end of member I0 there is an` end member I2 provided with a capping iiange I4. Member I2 is provided with an opening for the. pump rod or piston rod I6. The lower end of the cylindrical member I0 is provided with a threaded nipple I8 having threadedly securing thereto a nozzle member 20.

A rubber washer or gasket 22 is clamped between the end of the nipple I8 and a shoulder on the nozzle 29. The diameter of the aperture in the washer or gasket member 22 issomewhat smaller than the adjacent diameter of the nozzle 20. The nozzle 20 is provided with a cylindrical cavity 24, terminating in a bevelled valve seat 26, having seated thereon, under certain conditions, a valve member 30.

This. valve member 30 is provided With a valve stem 36 having a longitudinally extendingy bore 32 aligned with the aperture in the washer or gasket member 22 and aligned with the outwardly tapering nozzle portion 34 of the nozzle 2U. The gasket member 22, in addition to sealing the nozzle 2U to the nipple I8, also provides a stop or retaining means for the valve member 30, so that when the valve member 30 is located in the cavity 24 and the nozzle is screwed into position on the nipple I8, the gasket member 22 provides an upper limit `for the valve member. The valve member 30' is provided with a frustro-conica-l valve seat engaging head 40 seated upon the valve seat 26.

Means are provided for aligning the valve stem S with the center of the cylindrical cavity 24.

This means forms a fluid passage around the valve, so as to permit the fluid to be drawn in very rapidly when the valve is unseated from the valve seat. In the particular embodiment shown, the valve stem 36 has been provided with a plurality of radially disposed arms or spacers 42. The arms or spacers 42 are arranged in spaced relation from the conical` head 40 and are adapted to be positioned in the cylindrical cavity 24 of the nozzle 20. A second set of arms 44, substantially identical to those already described, is located in the extreme upper end of the valve member 30. The arms 42 and 44 cooperate to maintain the valve member in aligned relation with respect to, the valve seat and in aligned relation with the normalnow of fluid through the nozzle, as will appear more fully later.

The lower or inner end of the rod I6'is threaded and supports a Washer-like piston member 50, having mounted on either side a pair of leather or flexible washersv 52 abutting` retaining Washers 54 held in position by a 'pair of nuts 56. These parts cooperate to form a piston. The Vupper end of the rod I6 supports a VD-handle 60, used to` manually actuate the rod I6. In order to provide a cushion for arresting the upper movement of the piston, a cushioning spring 62 surrounds the upper end of the rod and is seated against; an annular inwardly projecting boss on the end member |2. The upper end of the cylinder is'provided with a plurality of vents 64' to permit the escape of air located above the piston;Y f i f In filling the spray pump, the lower end of the nozzle is submerged in the iluid to be sprayed. The rod I6 is withdrawn or raised in the cylinder IG, causing the piston members to create avacuum in the lower end of the cylinder. the fluid is drawn in through the lower end of so as to unseat the valve portion llo from the valve seat 25, permitting the fluid to pass rapidly along the sides of the valve member held in the central position by the arms i2 and 44. The Iluid owsrin the spaces between the arms. A

small .quantity of the uid passes through the be seated upon the valve seat 26, so as to restrict the flow of the fluid escaping from the gun to As i Y 115 the nozzle, the fluid raises the valve member 30,

Although thenozzle has beenshown as a part Y of a spray pump, it'may be used as a nozzle for 'they fluid passing through the small orifice 32. v

'By this arrangement, the fluid is discharged 'slowly under a comparatively large head. Y

As the fluid escapes through the nozzle, it may lbe dispersed or sprayed by a spray screw l0, having the inner'end formed into a conical fshape'Z.Y VThe conical or pointed end of the screw may project into the stream discharged stop member 'M WhenY the screw is unscrewed so as to engage therstop member 74, the inner point of the screw does not come in contact with thev stream'or jet discharged through the valve.

' through the valve, so as to spread the stream,V dividing it into Ya fine spray or mist. The screw Y v 16 threadedly engages the side of the nozzle 34 v and is limited-,in its Youtward movementby a .This pump may be used a'sare extinguisher,

utilizing either water or any other suitable kiuid for ,extinguishing fire.

Furthermore, theV pump may be used in spraying fruit trees and plants,

paint and white-wash or any vother suitable fluid the preferred embodiment shown in Figure 1,

'a tank |00 Vhas been shown* that tapers from bottom to top, so as to provide ,a ,wide base. Near Vthe Vbottom of the tank 0D is a holster or pocket E92 receiving the nozzle of the spray pump when not inV use. YA suitable loop |04 surrounds the spray pump and is V.attached to the top ofthe tank.V In'order to facilitate the handling of the tank, it may be provided with a D-handle |95 and covered by a suitable lidY IBB providedV with spraying stock dip and disinfectants, sprayingY a hose for sprinkling water and the like. In Figure 6 the nozzle has been shown attached to therend of a hose for spraying water. The type of a stream is determined by adjusting the screw Throughout the specification and claims spray gun, as applied to applicants device, in-

cludes a squirt gun used to forcibly eject a stream of water, where it Vhas not otherwise `been limited to a device adapted to form a ne mist or spray. Y Y

Although the preferred embodiment of the Adevice has been described, it Ywill be Vunderstood that withinA the purview of this invention various v Vchanges may be made in the form, details, pro-Y portion and arrangement of parts, the combination thereof and mode of operation, whichgenerally stated consist in a device capable of carrying out the objects set forth, as disclosed and Y Y dened in the appended claims, Y Having thus'described my invention, I

reciprocatory movement in the cylinder, said cylinder terminating in aY threaded nipple portion,

'with a nozzle assemblyincluding a nozzle body member engaging thev nipple, a gasket member smaller than theadjacent diameter ofthe nozzle member, said nozzle member having a restricted portion forming a valve seat, a d uoffunctional valve member `mounted for reciprocatory movement between the valve seat andthe gasket mem` ber, saidvalve member havingY a Vlongitudinally f Vextending boreregistering with the yopening passing through the restricted portion, iand1 means for holding the valve member in spaced relation from the walls of the nozzleY member, said means vpermitting the flow Vf fluid around the valve member when water is drawninto the cylinder of Ythe pump, said valveomemberY being seatedupon the'valve seat when the fluid is expelled from the cylinder( so as to ,restrict'the flow of fluid to the fluid passing through thebore of thervalve member.

2.V In a spray gun pump assembly,rthe combina-v tion of a cylinder and a piston mounted forY ,Y reciprocatory movement therein, said' cylinder Y Y' Yterminating in a nipple portion, with a. nozzlerassembly Aincluding Y.a 4nozzle Ybody memben,V said a handle i0. The lid is preferably held in posi- 'y tion Yby a suitable chain or exible member i2.

Y The spray gun need not necessarily'be usedY lin connection with the tank, even though the spray gun Ymay be Vused as a fire extinguisher.

nozzle member having a cylindrical cavityterminating in 'a' reducedV portion forming a Vre- Vstricteol oricemerging into a flared, ange portion,Y a duoffunctional valve member mountedf for reciprocatory movement'lincthe cavity, 'said `valve member having Va longitudinally extending bore registering V`with the Vrestricted,orificefsaid Y Y valve memberhaving a headfengaging thereo f duced portion when in'one positionfsorasto permit claim: i 1. In a spray gun pump assembly, the com bip nation of a cylinderr and a'rpiston mounted for the escape oi.' uid only through the bore of the valve member, said valve member when unseated permitting the ow of uid into the cylinder both through its bore and around the sides so as to permit the cylinder to be easily and quickly lled With the spray fluid.

3. In a spray gun pump assembly, the combination of a cylinder and a piston mounted for reciprocatory movement therein, said cylinder terminating in a nipple portion, with a nozzle assembly including a nozzle body member attached to the nipple portion, means for sealing the juncture between the nipple and the nozzle member, said nozzle member having a cylindrical cavity terminating in a reduced portion forming a restricted orifice, a duo-functional valve member mounted for reciprocatory movement in the cylindrical cavity, said valve member having a stem portion, a longitudinally extending bore passing through the entire valve member for registry with the restricted oriiice, said valve member having a head adapted to engage the reduced portion of the nozzle member when in one position so as to permit the escape of fluid only through the valve bore mounted in registry with the restricted oriice, a plurality of radially disposed arms mounted upon the valve stem for holding the valve member in a centrally disposed position in the cylindrical cavity, said valve member when in unseated position permitting the ilow of fluid into the cylinder of the spray gun both through the bore of the valve member and around the valve member to permit rapid and easy lling of the cylinder of the spray gun.

4. A nozzle assembly including a cylindrical main portion provided with a cylindrical cavity terminating in a reduced portion forming a restricted orice, a valve member mounted in the cavity, said valve member being provided with a valve stem concentrically disposed with respect to the cylindrical cavity, a bore extending through the valve member, said bore registering with the reduced portion, said Valve member having a head adapted to be seated upon the reduced portion when the valve member is in one position, meansfor holding the valve stem in concentric relation With respect to the Walls of the cavity, said means permitting the flow of fluid around the valve member when the fluid flows in one direction, said valve member head being seated upon said reduced portion in response to the ow of iluid in the opposite direction so as to permit the fluid to be discharged only through the bore of the valve member when the fluid flows in this direction so as to form a jet.

MILTON S. DUNKELBERGER. 

